Rupeikis of Lithuania was born 1249 in Vilnius, Lithuania to Mindaugas (c1200-1263) and Morta (c1210-1262) and died 1263 Aglona, Latvia of unspecified causes.
Ruklys was killed at the same time with his father and his older brother Ruklys during a raid on Aglona castle carried out by Daumantas and Treniota, in retaliation for the abduction of Agna of Šiauliai (c1242-c1263), Daumantas' wife.
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